Hello dear student,

As you haven't mentioned your category so we cannot exactly tell you if you can get into any nits or not . Because if you belong from general category then the probability of you getting into NIT is less. while if you belong from some reserved category then they are chances that you get into NIT. while you can expect your rank on the basis of the percentile you obtain in JEE mains is  95,500- 95,600. I hope this will be helpful for you dear student. Also you are eligible to appear for JEE advanced.

If you want to calculate your rank by your own then dear student you can do it as total percentile score is the percentage  of people ahead of you. 869010 are the number of candidates appeared for Jan exam. So rank formula is (100 - your total score) X 869010 /100.

If the number of candidates for April exam increased to 1200000 then your final rank shall be (100 - your total score) X 1200000/100

Best wishes